I had one on my first gasser, a Wild Hare Edge 540 that I over built it was the 1st gen. so it was heavy. My 540 with the Brison had good power not great because of the heavy plane it was in but it would hover and climb out of a hover .. So in your smaller Cap it should pull it good..If missing could be runing rich will the motor clean out on a up line?? If so it's rich..I hope this can help ...